How to Know When to Give Up

"I'm not a procrastinator. I have a very, very good, probably overactive work ethic," he says. "There are times where I can be lazy, but that's usually because I'm running on fumes and can no longer lift my arms." But in terms of when to know when to give up, you know, when to fold,  he doesn't really know from a professional standpoint. 'The only thing that I really have walked away from is unhealthy negative behavior'